---------------------------------------------------------- RV4-List Digest Archive --- Total Messages Posted Wed 05/18/05: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:29 AM - new EFIS (glennpaulwilkinson) ________________________________ Message 1 _____________________________________ Time: 09:29:39 AM PST US From: "glennpaulwilkinson" Subject: RV4-List: new EFIS --> RV4-List message posted by: "glennpaulwilkinson" Greetings Fellow RV's, I'm planning a panel upgrade sometime this summer and have intended to use analog airspeed, turn coordinator and altimeter as back up. But I have also seen many electric panels w/o any of the backup instruments I had planned and have been questioned about doing so. Are the electronic flight displays so reliable that back up is not really necessary? I have no experience with these units. My thoughts were related to alternator failure or some kind of EFIS malfunction. Please tell me about your experience/opinions on this. Thanks, Glenn N654RV @ OKZ P.S. Check out the RV of The Week on Vans Airforce site......It's Mine!